Fountain-pen.



1). e; DEM AREST. FOUNTAIN PEN, KPPLIOATION FILED JUN: 17, 1911. RENEWED HAY 15. 191$. 7

1,112,3 2, f PatentedSept.29,1914.

UNITED STATES rattan:

DEW'ITT C. DEMAB-EST, 0F PASSAIC, NEW JERSEY.

FOUNTAIN -PEN T aZZ whom it may concern Be it known that I, DEWITT C. Dmmnns'r, a citizen of the United States, residlnp; at

Passaic, in the county of Passaic and State either in the stylograph kind of pens or in the ordinary kind.

The. object in view is the provision of an improved feed bar designed to so regulate the How of ink from the holder and the admission of air thereto as to cause an even and regular feed.

Another object in view is the provision of a feed bar formed with a novel construc tion and arrangement of air passageways through which air is permitted to pass into the holder to take the place of the ink as the ink flows'through some of the passageways in the feed bar, the various assageways bein; so formed and arranged as to automatically seal the holder against admission of air except when necessary to displace a proper amount of ink for keeping the point of the pen supplied with ink. Viith these and other objects in View the invention comprises certain novel constructions. combinations, and arrangement of parts as will be hereinafter more fully descrihed and claimed.

In the accompanyino; drawings: Figure 1 is a longitudinal vertical section through a StYlOQ'l'klPiliC pen einbmlyim; the invention. l lfl. 2 is a top plan view ot the feed bar.

Figg'jil is a section tlzroiuz h Fig. 2 on line 3-3. Fig. i a cross section through Fig.

on line 'l 'i'. Fig. 5 is a View similar to Fig. except thatthe same discloses a slight modification of the invention. Fig. (3 is a view similar to Fig. 1, except the invention is applied to the ordinary style of pen.

- Referring to the drawing by numerals, 1 indicates the holder which contains a supply of ink in the usual manner, and 9 the removable feed bar casing. The feed bar casing 2 may be bored in the usual manner or as desired for properly accommodating the feed bar 3. The feed bar 3 is formed with a longitudinal slot formed by'a saw or in any desired manner, and is tapered from its rear toward its front, as best illustube trated in F :2, the front portion be narrower than the rear part llie .lon tudinal groove or channel formed by the u 4, extends preferably below the central line of the feed bar 3, shown in Fig. 3, 3 beyond ink carrying bore 7, formed the feed bar. The bore 7, l c ommod ate preferabl which extends ent througl and protrudes at one end tn 9. The end -t the feed rod 2e rod 1.. any desired "ay as by by. bending the wire a cause the same t bind and is the bore 7, and ii-nil hold the wire reed ro in place, while at the same time permitti a free passage of the ink or writing 1 The channel 4, not only extends to the oore T; but also extends to the bore 10, into wh rl the tube 9, is placed, so as to permit a free supply of ink to the tube 9, and a tree. aw

sli I tion of the air in the slot 4. The slot 1%, is v intended to permit a proper gripping of the. tube 9, for holding the same in place by or dinary frictional contact.

The feed bar 3, is formed on its exterior surface with side recewes l1 and 12. which preferably extend from the front of the casing 2. to a point near the rear end of the feed bar so as to permit a tree supply of air on each side of the feed bar to a point in proximity to the ink in the holder 1.- order to complete the passageway air from the notched out on rcce d portions 11 and 1: the feed bar is formed with a ililils'z't ely extending recess 13, havin at its inner end an enlarged boring or opening '14, intersecting the here i, and through which air may freely pass into the upper part of the slot 4, and into the longitudinal bore 15, which extends from the rear for the end of the feed bar and opens into the trans;

verse recess 13. If desired,,a second and corresponding transverse recess 16, may be and the outflow of ink. In constructing the slots and bores, the seme er? course may be made in varying sizes as desired, but the" rear part for the slot or channel .1-, is preferably larger'than the front part, the channel tapering from rear to front, and preferably the bore 15 is smaller than the bore 7, and the bore 7, larger than the transversebore 14%, while the bore 1 1, is preferably slightly smaller than the bore 15.

In operation, when the pen disclosed in Fig. 1 is being used, ink will flow through the slot or channel 4:, and through the bore 7, and also through the bore 15, transverse recess 13, and bore 14, until the recess 13, and bore 14, have been filled with ink, when additional air is prevented from entering into the holder. When the transverse recess 13, and its bore 1 have been filled with ink, it is manifest that no further admission of air can be had, but the-ink will be permitted to freely flow through the bore 7, and out through the tube 9, in the usual manner until the ink in the transverse recess 13, and lbore 14;, has passed out of the bore 7, whereupon an additional supply of air will be admitted to the holder, and the operation repeated indefinitely so long as the supply of ink lasts. The second, or auxiliary, transverse recess 16, assists in permitting the ink entering recess 13 and. bore 14, to flow into the bore 7, and from thence out of the penby supplying air or taking'the place thereof.

In Fig. 5, a slightly modified form is disclosed in which a metallic tube 17, is eInnloyed instead of glass tube 9. In this form of the device the forward portion of the channel 4: ends at ,point 18, slightly before the same reaches the bore in which the tube 17, is held. The bore 7, extends into this bore for the tube 17, said tube being designated 10 so as to supply ink freely to said tube.

In Fig. 6, the invention is shown applied to the ordinary style of'pen in which a feed bar 3 is provided with an extension 19, for fitting under the pen or nib 20. Aside from this slight change, the construction and operation of this feed bar is substantially like thc'form shown in the other views of the drawing, and willtherefore need no additional description. 4

It will be evident that the various cuts and borings to produce slots or channels and the recesses and the like, maybe varied in size without departing from the invention as occasion may require and for pens or nibs of varying sizes. It will further be understoodthat the cuts and various borings may be changed or rearranged to accommodate various forms of feed bars, and for other purposes, without departing from the spirit or scope of the invention as defined in the appended claims.

V /That I claim is: I

1. A fountain pen feed bar formed with notched-out portions, with a longitudinal feeding bore, with a transverse recess com- Inunicating with said bore and notched-out portions, and with another longitudinal bore leading to said recess from the inner end of thefeed \bar. v

2. A fountain pen feed bar formed with tapering notched out portion on each side thereof for the purpose specified, also formed with a longitudinal feeding bore, with, a transverse recess communicating with said bore and notched-out portions, and with another longitudinal bore leading to said recess from the inner end of the feed bar,

3. A fountain pen feed bar formed with a longitudinal feeding bore, and with a transversely extending recess having at its inner end a transverse bore intersecting the longitudinal bore, the feed bar being further formed with a side recess intersected by the transverse recess, and with another longit-udinal bore leading to said transverse recess from the inner end of the feed bar.

4. A fountain pen feed bar formed with a longitudinal bore, with side recesses, with front and rear transverse recesses intersecting said-recesses and said bore, and with a longitudinal channel intersecting said transverse recesses and said bore.

5. A fountain pen feed bar formed with a longitudinal feed bore, and with tapering longitudinal recesses .with front and rear transverse recesses intersecting the longitudinal bore, and with another longitudinal bore leading from the inner end of the feed bar to the rear transverse recess.

' 6. A fountain pen feed bar formed with a. longitudinal'ber'e, with side recesses, with front and rear transverse recesses intersecting said side recesses and said bore, with a longitudinal channel intersecting said transverse reoesses and said bore, and with another longitudinal bore leading into the rear transverse recess from the inner end of the feed bar.

7. A fountain pen feed bar formedwith a longitudinal feeding bore, with front and end of the feed barand with a communica-- tion distinct from said first-named bore be tween said front and rear recesses.

In testimony whereof I afiix my signature in presence of two witnesses.

V DEWI'IT C. DEMAREST.

lVitnessesf I CORNELIUS H. DEMAnns'r, ELIZABETH Ross. 

